Why are trees and other plants green? Seems like a simple question. But the answer is full of surprises. Using a special camera that can pick up light just beyond the visible range, into the near-infrared, you’ll get to see trees like...

Do you remember longing for a snow day so you could get out of school? Scientists have found evidence that a decades old technique might increase the chances of a snow day.

Some scientists believe that 3.6 billion years ago Earth might have been purple, and that theory is giving us some clues in our search for life in the universe.

Did you know that most (but not all) plants need leaves to obtain food?
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Life processes - Green plants - Pa
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Learning Points
Not all plants make the
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r own food through...

In this video, we'll look at:<br/>
- What the early atmosphere was li<br/>ke on earth
- How that atmosphere changed t<br/>o be suitable for life
- The processes responsible for features of the earth we see today

How do we find out the position that an organism occupies in a food chain? The different feeding positions in a food chain or web are called trophic levels. All food chains and webs have at least two trophic levels, starting at level one...

It explains the unidirectional flow of energy through different trophic levels; energy flow maintained by laws of thermodynamics, food web, food chain and the ten percent law.

We wouldn’t have life without photosynthesis; life processes depend upon it. Not only are photosynthetic organisms the main producers of food, but without photosynthesis Earth’s atmosphere would lose its oxygen. In photosynthesis is that...